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Date:      Sun, 15 Feb 2015 22:51:16 +0100
From:      Rainer Duffner <rainer@ultra-secure.de>
To:        freebsd-xen@freebsd.org
Subject:   Running FreeBSD 10.1 on Xen?
Message-ID:  <3DE2DD7E-8C5C-4291-A3BA-854625F11B0F@ultra-secure.de>

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Hi,

we are thinking about running FreeBSD 10.1 on Cloudstack, with Xen =
virtualization for a customer in a =E2=80=9Emanaged hosting=E2=80=9C =
type of setup - we are administrators of  both Xen and FreeBSD on our =
own premises).
The customer is currently running a managed multi-server FreeBSD 10.1 =
setup on bare metal and is overall quite satisfied but would like to =
have more flexibility.

The handbook mentions nothing about this, there are two different wiki =
pages about Xen:

https://wiki.freebsd.org/FreeBSD/XenNG
(which I assume is the =E2=80=9Eright=E2=80=9C one nowadays)
and
https://wiki.freebsd.org/FreeBSD/Xen

I=E2=80=99m really more a FreeBSD-guy than a Xen guy but I=E2=80=99m =
wondering what the =E2=80=9Eoptimal=E2=80=9C configuration for such a =
setup is?

I see that the XENHVM driver is thankfully already included in GENERIC.
The man-page also mentions to include:

           options NO_ADAPTIVE_MUTEXES
           options NO_ADAPTIVE_RWLOCKS
           options NO_ADAPTIVE_SX

Is this still necessary with 10.1?

I want to continue using freebsd-update(8) with binary patches provided =
by the FreeBSD-project - under almost all conditions.

Will there be any improvements in 10.2 that are worth waiting for?
Or does one need to track current to make the most of FreeBSD under Xen?

Looking at bugzilla, there is bug:
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D197344

Does that also apply when a VM doesn=E2=80=99t do routing?



Rainer




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